The Five Mass Extinctions

Ordovician-Silurian

• Sea-level drop and climate change caused by formation of glaciers

• Possibly a large comet strike; possible decrease in global temperatures

• Volcanic eruptions

• Astroid

Tags

NGSS.HS-ESS2-2

NGSS.HS-ESS2-4

NGSS.HS-ESS3-5

Late Devonian

• Comet srike, below in sea level

• Volcanic eruptions

• Astroids

• Above sea level

Permian–Triassic

• Volcanic eruptions, drop in sea leve

• Astorid

• Volcanic eruptions

• Below sea level

Tags

NGSS.HS-ESS2-4

NGSS.HS-ESS3-5

Triassic–Jurassic

• decrease in sea level and lower oxygen levels in oceans

• Astorids

• ; low oxygen levels in oceans; drop in sea levels

• volcanic eruptions; below sea leve

Tags

NGSS.HS-ESS2-2

NGSS.HS-ESS3-5

Cretaceous–Paleogene (K–Pg)

• Volcanic Eruptions

• Large astroids

• Below sea level

• above sea levele

Tags

NGSS.HS-ESS2-4